justify and explain this
its a urgent question
1- the fact that a small source of light cast a sharp shadow of an opaque object tells us that light travels in straight line path i dont understand this
2- how and why ddoes any object caste shadow
3- what is the evidence for wave nature of light as well as for particle nature of light
4- explain this line in 150 words and prove this
light is composed of particles which travels in a straight line at very high speed
(1) A small source of light cast a sharp shadow of an opaque object tells us that light travels in straight line path. It means, light is stopped by opaque which was travelled in straight way and cast a shadow.
(2) Refer the answer given by your friend.
(3) Light shows the dual nature
(i) Wave nature of light:-
Physical phenomena of light like interference, diffraction shows that light behave as a wave.
(ii) Particle nature of light:-
Physical phenomena of light like photoelectric effect, Compton effect shows that light behaves as a particle.
@Sudeep, Good Effort! Keep it up!